Dry gas-meter.



mvamzz. I PATENTED APR.19,1904.

s. KOZMINSKI.

DRY GAS METER.

APPLIGATION FILED AUG. 29, 19%

N0 MODEL. 2 SHEETS-SHEET 1- Fig. 1.

n45 Nouns PETERS co, HOTG-LATHC WASHINGTON. u c.

UNITED STATES Patented April 19, .1904.

PATENT OFFICE.

sAnUEL KoZMiNsKI, or OHARLOTTENBURG, GERMANY, Assieuoa TO v THE FIRM or VESTA, FABRIK AUTOMATISCHEB GASMESSER e. M. B. H.,

or OHARLOTTENBURG, GERMANY.

1 DRY GAS-METER.

sPEciFIcATIoiv' forming part of Letters Patent No. 757,627, dated April 19, 1904.

Application file: August 29,1902.

To all 'whg m it may concern/.

Bejit known that I, SAMUEL KoZMINsKI, a subject of the'King of Prussia, German Emperor, anda resident of No. 39 vVilmersdor ferstrasse, Charlottenburg, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Dry Gas-Meters, (forfwhich I have made application for useful model in Germany,dated J anuaryBO, 1902, not numbered yet,) of wh'ch the following is a specification. V My invention relates to improvements in dry gas-meters; and the object of my invention istosecure, as much as'can practically be obtained, steadiness and accuracy of the indications of the meter. Such steadiness and accuracyhitherto hav e been missing in dry gasmeters, for the reason that the membrane or diaphragm of the bellows constituting the measuring-chambers of the meter when forced into either of its extreme positions by the pressure of the gas is much liable to forming plaits or folds of varying shape and size, whereby the capacity of the measuring-chambers is not constant. Though the variations of the capacity caused by such plaits or folds in the flexible material of the bellows be but slight, they are summed up by the frequent reciprocations of the membrane or diaphragm, and accordingly the records of the meter are neither true nor constant.

The object of my invention is to prevent the formation of plaits or folds in the flexible material of the bellows, which used to consist of leather or gas-tight fabrics, in either of the extreme positions of the bellows, and I obtain said object by providing suitable means for guiding the membrane or diaphragm of the two or several reciprocating bellows of the meter in their movements from one end to the other of its extreme positions.

In the accompanying drawings, Figure 1 is a plan of one of the two or severalmeasuringchambers of the dry gas-meter. Fig. 2 is a central section through the two chambers of the meter, juxtaposed, as usual, and working within a gas-tight box or casing in a wellknown manner. Fig. 3 is a side elevation of Serial No. 121,505. (Nomodeld the complete apparatus, showing the sur,

rounding box of the two measuring-chambers,

the slide-valves alternately connecting the two gas-ports with the dischargeepipe, and the me chanical means for transmitting motion to said sl 1de-valves.

halves a and 6, preferably of sheet metal and jointed at. the periphery by making. their edges overlap each other, the, edge of the flexible membrane or diaphragm 0' being en:v

in the other chamber, B, will take about an in termediate position, the positions of the two membranes or diaphragms in the two chambers being never the same, but following each other to secure a continuous flow of gas and to overcome the dead-point of the crankshaft by which the slide-valves are controlled and the recording-gear actuated. The main portion of said membrane or diaphragm c is engaged between two disks 0! and e, preferably of sheet metal, riveted or otherwise secured to the flexible disk 0. A rod f centrally traverses the membrane or diaphragm e and its two holding-disks d and e, the said rod f being tightly secured to the disks cl and e by means of a collar g, integral with the said rod f, and a nut h, screwed to athread of the said rod f. By the reciprocating motions of l respectively, in a stuffing-box 7c and on the other side of the membrane 0 in a bearing Z, having a tubular extension m. Owing to such exactly-straight motion of the rods f and the parts secured thereto, the membranes or diaphragms 0 on arriving in theirextreme positions of their reciprocating throw will assume the shape of a truncated cone, as clearly shown in chamber A, Fig. 2. No plaits or folds will occur in the flexible membrane or diaphragm. The capacity of the measuring-cham ber, formed by the two extreme positions of the membrane or diaphragm 0, in consequence will remain the same in every throw, and the indications of the gas-meter will be steady and accurate, which result couldnot be obtained in dry gas-meters the membranes of which had no guiding means in their reciprocating movements. One end of each of the two rods f, extending from the box through the stuifing-box k, is linked to a lever n, the other end of which is secured to a shaft 0. The oscillating motions of the two shafts 0 are transmitted to a common shaft in a manner to impart a continuous rotating motion to the said shaft, which commands the slidevalves and also drives the recording-gear of the gas-meter. The mode of obtaining continuous rotary motion of a shaft from two oscillating shafts receiving motion from the reciprocating bellows of a gas-meter is clearly shown in Fig. 3 of the drawings.

While the disposition of the lever n and shaft 0 as herein shown is what is deemed preferable, it is evident that their locations may be changed to suit existing circumstances.

I claim as my invention 1. In a dry gas-meter, a plurality of cham-' bers, a diaphragm in each chamber, a rod passed through and ad justably secured to each diaphragm, guides on the adjacent faces of said chambers for adjacent ends of said rods, stufling-boxes on the opposite sides of said chambers through which said rods pass, links provided with slots at one end receiving means on the outer ends of said rods, and oscillatory shafts to which the opposite ends of said links are connected, all substantially as and for the purpose specified.

2. In a dry gas-meter, a plurality of chambers, a reciprocatory diaphragm in each chamber, rods passed through and adjustably secured to each of said reciprocatory diaphragms, guides on the adjacent faces of said chambers for the adjacent ends of said rods, stufling-boxes on the opposite sides of said chambers through which said rods pass, links provided with slots at one end to receive means on the outer ends of said rods, and oscillatory shafts to which the opposite ends of .said links are connected, all substantially as and for the purpose specified.

In witness whereof I have hereuntoset my hand in presence of two Witnesses.

SAMUEL KOZMIN SKI. Witnesses:

WOLDEMAR HAUPT, HENRY HASPER. 

